OrganicDiscount
Happymodel CrossF4 ELRS 1-2S Flight Controller for Tinywhoop with BMI270 IMU and Serial UART ELRS V3.0 Receiver

HAPPYMODEL

Happymodel CrossF4 ELRS 1-2S Flight Controller for Tinywhoop with BMI270 IMU and Serial UART ELRS V3.0 Receiver

Reviewed byUpdated 31 Jul 2026

Best price available

£49.99

From £49.99 across 1 merchant
Check price — £49.99 at Makerfire

Key features

  • Happymodel CrossF4 ELRS 1-2S Flight Controller with Onboard UART ExpressLRS 2.4GHz Receiver

Product Overview

Happymodel CrossF4 ELRS 1-2S Flight Controller with Onboard UART ExpressLRS 2.4GHz Receiver

Specifications

  • Flight controllerFirmware target: CRAZYBEEF4DX4.3.2MCU:STM32F411CEU6 (100MHz, 512K FLASH)Sensor: BMI270(SPI connection)Power supply: 1-2S Lipo Lihv battery input (DC 2.8V~8.7V)Built-in 5A(each) Blheli_S 4in1 ESC Dshot300 readyBuilt-in Betaflight OSD(SPI Control)Built-in UART ExpressLRS 2.4Ghz receiver(Default firmware ExpressLRS v3.0.1)Built-in 5V 1A BECBuilt-in voltage detection and current sensorBuilt-in Onboard flash 16Mb for Blackbox Onboard 4in1 ESCMCU upgraded to EFM8BB21Power supply: 1-2S LiPo/LiPo HV (2.8v~8.7v)Currents: 5A continuous peak 6A (5 seconds)Support BLHeliSuite programmableDefault Factory firmware: S_H_50_REV16_8.HEXSupport ESC Protocol: DSHOT150/DSHOT300/DSHOT600 Onboard UART ExpressLRS 2.4GHz ReceiverPacket Rate option: 25Hz/50Hz/150Hz/250Hz/500HzRF Frequency: 2.4GHzAntenna: enameled copper wire 31mm lengthTelemetry output Power: <12dBmReceiver protocol: CRSFDefault firmware version: ExpressLRS V3.0.1The same hardware with Happymodel EP1 Could update firmware via ExpressLRS configurator Betaflight configuration: ***Bind procedure is the same like Happymodel EP1/EP2 receiver , need to upgrade your ExpressLRS TX module to V3.X version first. Onboard blackbox enable method: Type the following command to CLI:set blackbox_device = SPIFLASHset flash_spi_bus = 2resource FLASH_CS 1 a14save

What's in the Box

1x Happymodel CrossF4 ELRS 1-2S Flight Controller

Pros & Cons

Pros

  • Happymodel CrossF4 ELRS 1-2S Flight Controller with Onboard UART ExpressLRS 2.4GHz

Cons

  • Currently sold by only one merchant — limited price competition
  • No customer reviews yet
  • Price history not yet established

Price Analysis

Fair Price

The current price is around the average. It's a reasonable time to buy.

Current Best

£49.99

Average Price

£49.99

Lowest Ever

—

Highest Ever

—

Compare Prices (1 merchant)

Compare prices for Happymodel CrossF4 ELRS 1-2S Flight Controller for Tinywhoop with BMI270 IMU and Serial UART ELRS V3.0 Receiver

Ma

Makerfire

Best Price
Out of Stock

Price

£49.99

Shipping

—

Total

£49.99
Go to Store

Price Alert

Get notified when the price drops. No account required.

Get a price drop alert
£

Current best price: £49.99

Product Details

BrandHAPPYMODEL
CategoryToys
MerchantMakerfire
GTIN755404239753
MPN7087662

You might also like

Browse all products →
iScooter DX5Pro / DX5 2000W Electric Scooter with Seat & Large Basket - Moped Style - DX5 1500W37% OFF

Iscooter uk

iScooter DX5Pro / DX5 2000W Electric Scooter with Seat & Large Basket - Moped Style - DX5 1500W

£379.99£599.99Save £220.00

Best price at ihoverboard

Compare 2 prices
Compare Prices
ONTAKI Duckbill Applique Scissors (4.5")

Ontaki

ONTAKI Duckbill Applique Scissors (4.5")

£12.90

Best price at Ontaki Affiliate program

Compare 2 prices
Compare Prices
M10 / EB3S All-Terrain Electric Mountain Bike - EB3S White36% OFF

Ihoverboard

M10 / EB3S All-Terrain Electric Mountain Bike - EB3S White

£508.99£799.99Save £291.00

Best price at ihoverboard

Compare 2 prices
Compare Prices
Greg Mendez

The Sinclair Music Hall

Greg Mendez

£39.11

Best price at TicketNetwork Affiliate Program

Compare Prices
Slazenger Wimbledon 4 Tennis Ball 18 Can Case

Dunlop

Slazenger Wimbledon 4 Tennis Ball 18 Can Case

£10.95

Best price at Childrensfootball Com Uk

Compare 2 prices
Compare Prices
Bathroom Accessories Organizer Set Automatic Toothpaste Dispenser Wall Mount Toothbrush Holder Toiletries Storage Rack 21032259% OFF

Bathroom Accessories Organizer Set Automatic Toothpaste Dispenser Wall Mount Toothbrush Holder Toiletries Storage Rack 210322

£21.71£52.95Save £31.24

Best price at DHgate

Compare Prices
TEMU Fishing Floats Rigs For Saltwater Rattle Weighted Bobbers Fishing Tackle (4pcs, 2/3/4/5in, Green/yellow/orange)36% OFF

Temu

TEMU Fishing Floats Rigs For Saltwater Rattle Weighted Bobbers Fishing Tackle (4pcs, 2/3/4/5in, Green/yellow/orange)

£8.10£12.69Save £4.59

Best price at Temu Affiliate Program

Compare Prices
iScooter X02/X02Pro Mobility Scooter - X02Pro Mobility Scooter - Red37% OFF

Iscooterglobal.co.uk

iScooter X02/X02Pro Mobility Scooter - X02Pro Mobility Scooter - Red

£188.99£299.99Save £111.00

Best price at ihoverboard

Compare 2 prices
Compare Prices

Frequently Asked Questions

What is the best price for Happymodel CrossF4 ELRS 1-2S Flight Controller for Tinywhoop with BMI270 IMU and Serial UART ELRS V3.0 Receiver?+
The best price for Happymodel CrossF4 ELRS 1-2S Flight Controller for Tinywhoop with BMI270 IMU and Serial UART ELRS V3.0 Receiver is currently £49.99 from Makerfire. We compare prices across 1 merchant to find you the lowest price.
How do I get notified when Happymodel CrossF4 ELRS 1-2S Flight Controller for Tinywhoop with BMI270 IMU and Serial UART ELRS V3.0 Receiver drops in price?+
You can set a free price alert on this page — just enter your email and your target price. We'll email you as soon as the price drops to that level. No account needed.
Is HAPPYMODEL a good brand?+
We compare HAPPYMODEL products across multiple UK merchants to help you find the best deals. Check our HAPPYMODEL brand page for more products and price comparisons.

How we make money

OrganicDiscount is free to use. When you click a link to a merchant and make a purchase, we may earn a small affiliate commission at no extra cost to you. This helps us keep the site running and continue comparing prices across UK retailers. Our rankings and recommendations are never influenced by commission — we always show the lowest price first.